Question 612703: Car A leaves Santa Barbara at noon traveling south toward Los Angeles at 70 mph. At 1pm car B leaves Los Angeles traveling north toward Santa Barbara at 90 mph. The distance between the cars at noon was 100 miles. If car B does not get pulled over, how many minutes after car B leaves will they pass each other?
Answer by ankor@dixie-net.com(22740)   (Show Source):
You can put this solution on YOUR website! Car A leaves Santa Barbara at noon traveling south toward Los Angeles at 70 mph.
At 1pm car B leaves Los Angeles traveling north toward Santa Barbara at 90 mph.
The distance between the cars at noon was 100 miles.
If car B does not get pulled over, how many minutes after car B leaves will they pass each other?
:
Let t = travel time of Car B
then
(t+1) = travel time of Car A
:
Write a distance equation; dist = speed * time
90t + 70(t+1) = 100
90t + 70t + 70 = 100
160t = 100 - 70
160t = 30
t = 30/160
t = .1875 hrs, .1875(60) = 11.25 minutes A meets B, at 01:11:15 PM
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